A brother and sister - a father and daughter. Now they're about to reveal their deepest secret, one they've always tried to hide. Their forbidden love. The psychologists call it "Genetic Sexual Attraction". When blood relatives fall for each other and sometimes do the unthinkable. And it's not a rare phenomenon, the experts say we'd be surprised at how prevalent it actually is. Nevertheless, in this country it's illegal. And many would say, immoral. Not so, the two couples in this story told Peter Overton. They claim they're just ordinary folk, normal happy families.

It's exhausting just watching her. There's no way a mere mortal's ever going to keep up with Lisa McCune. She hits the deck running before dawn and she's still going strong long after dark. There's her starring role in Sea Patrol, rehearsals for a stage production of Guys and Dolls, publicity shots and interviews.

You will have to forgive Peter Overton as he goes all patriotic. But this is so wonderful, so uniquely Australian you just have to see it. It's the outback of the old bush ballads. A sunburnt country, a land of searing heat and bright blue skies. Of battlers, heartache and drought. And then this. The most spectacular transformation you could ever imagine. After eight long years, the rains finally came and, almost overnight, there's been an explosion of life. Birds by the thousands, all kinds of critters. An awe-inspiring display of nature in all its glory. If only it could last forever.

Kathy Lette wrote the book on teenage girls in Puberty Blues 30 years ago. She's back on the beach, writing a new book about today's teenage girls. And now, it's her turn to be shocked. She's discovered a new generation of teens who can sure teach the boys a thing or two.

Professor Chris O'Brien is special. On television, on RPA, his warmth, decency and humanity light up the screen. He's one of the good guys, one of Australia's most renowned cancer surgeons, dedicated to saving the lives of others. But in one of those devastating twists of fate, he's now fighting to save his own life. Not only that, it's a brain tumour.

This is one Anzac Day story you won't have seen before. A heroic tale from a war that killed four million and a battle that saved the day for the Allies. The war was Korea and the battle, Kapyong. Sadly, we've also overlooked four brave young men who held out against impossible odds in that crucial moment of the war. Diggers who fought back wave after wave of enemy attacks, and survived the most ferocious hand-to-hand combat imaginable.

For most couples, having a family is the most natural thing on earth. But for a surprising number, it can become a real trial. Some seek help through IVF, others are forced to use surrogate mothers to incubate and deliver their babies.

Imagine if your life was hanging in the balance. That it depended on one thing — someone else's death. That's the way it is for thousands of Australians who need organ transplants. And tragically, many will die waiting. But let's go one step further — imagine you've already had a transplant and suddenly you need another. Well, you're in real trouble, in the same desperate situation as a young woman named Wendy Trail.

The grand old lady of Sydney is celebrating her 75th birthday. Hundreds of thousands will come to the party. Some of them, who walked the bridge when it opened in 1932, will be back with their grandchildren and great-grandchildren. It's still one of the great achievements of modern engineering and it helped set us on our path to the nation we are today. But there's always been a great, unsolved mystery about the Bridge. On Sunday night, after 75 years, we can tell – and show – all. This is one treasure hunt that's struck gold.

Raine Island is tiny, right at the top of the Great Barrier Reef, but an absolute treasure. A place so wild, so precious it's been declared off-limits to all but a few dedicated scientists. Just recently, Peter Overton was lucky enough to join one of their expeditions and what an amazing adventure that turned out to be. First, there were the turtles, then the sharks...

Just look where Aussie families are striking it rich. It's all happening in Dubai, the fastest growing city on earth. Thousands of Australians are flocking there to join this 21st century gold rush, as the sheiks spend squillions carving a modern metropolis out of the desert. You've never seen anything like it. Even the Aussies helping to build the new Dubai are gobsmacked. They just can't believe their luck.